A block `m_(1)` strikes a stationary block `m_(3)` inelastically. Another block `m_(2)` is kept on `m_(3)`. Neglecting the friction between all contacting surfaces, calculate the fractional decrease in `KE` of the system in collision.

Explanation

To solve the problem of the inelastic collision between the blocks, we will follow these steps:

### Step 1: Understand the System
We have three blocks:
- Block \( m_1 \) is moving with an initial velocity \( v \).
- Block \( m_2 \) is resting on block \( m_3 \), which is stationary.
- Block \( m_3 \) is initially at rest.

...